Ballpoint pen



FIG. 1 is a perspective view of the front, bottom and right side of a ballpoint pen showing our new design;

FIG. 2 is a front elevational view thereof;

FIG. 3 is a right side elevational view thereof;

FIG. 4 is a rear elevational view thereof;

FIG. 5 is a top plan view thereof;

FIG. 6 is a bottom view thereof;

FIG. 7 is a cross sectional view thereof;

FIG. 8 is a front elevational view thereof, with the cover removed;

FIG. 9 is a top plan view thereof;

FIG. 10 is a rear bottom view thereof; and,

FIG. 11 is a bottom view of the cover removed. 

The ornamental design for a ballpoint pen, as shown and described. 